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All Journal International Journal of Advances in Applied Sciences JURNAL KIMIA SAINS DAN APLIKASI TELKOMNIKA (Telecommunication Computing Electronics and Control) Tadris: Jurnal keguruan dan Ilmu Tarbiyah Agrointek Eksergi: Chemical Engineering Journal Biology, Medicine, & Natural Product Chemistry Jurnal IPTEK KOVALEN: Jurnal Riset Kimia J-PEK (JURNAL PEMBELAJARAN KIMIA) JC-T (Journal Cis-Trans): Jurnal Kimia dan Terapannya Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Al-Kimia Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Chemistry Indonesian Journal of Chemical Research Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal Fisika : Fisika Sains dan Aplikasinya Fullerene Journal of Chemistry Jurnal Karinov Stannum : Jurnal Sains dan Terapan Kimia Jurnal Ilmiah Farmako Bahari Indonesian Journal for Social Responsibility Jurnal Graha Pengabdian Reforma: Jurnal Pendidikan dan Pembelajaran JoEMS : Journal of Education and Management Studies Jurnal Ilmiah Ibnu Sina (JIIS): Ilmu Farmasi dan Kesehatan Journal of Disruptive Learning Innovation (JODLI) Journal of Engineering Science and Technology Jurnal Teknik Kimia dan Lingkungan Jurnal MIPA dan Pembelajarannya Bulletin of Chemical Reaction Engineering & Catalysis Prosiding Seminar Nasional Pengabdian kepada Masyarakat (SINAPMAS) Jurnal Terapan Pendidikan Dasar dan Menengah Jurnal Akademika Kimia Frontier Advances in Applied Science and Engineering Jurnal Konstatering
Sumari Sumari
Universitas Negeri Malang
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Concentration Effect of MgO/K2O Catalyst on Transesterification of Castor Seed (Ricinus communis) Oil: Pengaruh Konsentrasi Katalis MgO/K2O pada Transesterifikasi Minyak Biji Jarak (Ricinus communis) Santoso, Aman; Sumari, Sumari; Asrori, Muhammad Roy; Ni’mah, Irsyadatun
Stannum : Jurnal Sains dan Terapan Kimia Vol 6 No 2 (2024): October 2024
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v6i2.4692

Abstract

Fatty acid methyl esters can be obtained from the synthesis of vegetable oil with methanol using a base catalyst. Vegetable oil has the potential as biodiesel feedstock, the methyl ester character of various vegetable oils is different as from castor seed oil. Synthesis of methyl esters by transesterification reaction with the addition of a heterogeneous catalyst, namely MgO/K2O. The purpose of this study was to synthesize methyl esters from castor seed oil with MgO/K2O catalyst and to determine the yield and character. The research went through 6 stages which included (1) isolation of castor seed oil, (2) determination of free fatty acid (ALB) levels of castor seed oil, (3) manufacture of MgO/K2O catalyst (4) esterification of castor seed oil with H2SO4 catalyst (5) transesterification of jatropha seed oil with methanol and various variations in the concentration of the catalyst MgO/K2O 1%, 2%, 3%, (6) characterization of the synthesized methyl ester which includes tests of density, viscosity, acid number, refractive index and moisture content. The results showed that the concentration of MgO/K2O had an effect on the synthesis of methyl esters from castor seed oil, where the optimization condition was achieved at a concentration of 2% MgO/K2O with a yield of 97.99%. The methyl ester character which is synthesized from castor seed oil with a 2% MgO/K2O catalyst is having a density of 1.0244 g/mL, a viscosity of 22.531 cSt, an acid number of 2.81 g KOH/g methyl ester, a refractive index of 1.456, and a moisture content. 0.035%.
The Role of Notaries in Making Limited Liability Company Legal Entity Deeds through the General Legal Administration System Sumari, Sumari; Ma'ruf, Umar
Jurnal Konstatering Vol 2, No 4 (2023): October 2023
Publisher : Master of Notarial Law, Faculty of Law, Sultan Agung Islamic University

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Abstract

Registration of limited liability company legal entity deeded from a manual system to an electronic system or online is expected so that the registration or validation can run more efficiently and more effectively. Similar to the previous provisions, until now the process of making a request for registration into the General Law Administration System still requires the role of a notary. The purpose of this paper is to analyze: 1) The role of the notary in drawing up limited liability company legal entity deeds through the general legal administration system in Blora Regency. 2) The effectiveness of making and registering limited liability company legal entity deeds by a notary through the general legal administration system in Blora Regency. The approach method in this research is a sociological juridical approach. The specification of the research used is descriptive analysis research. Types of data using primary data and secondary data. Data collection by interview method and literature study. The data analysis method used is qualitative analysis. The research problems were analyzed using the theory of legal certainty and the theory of legal effectiveness with the results of the research concluding: 1) The role of the notary in making legal entity deeds of limited liability companies through the General Legal Administration system in Blora Regency, namely making deeds and making applications electronically through the general law administration system, because a notary deed that functions as an authentic deed must provide certainty and legal protection for the community and function as the most perfect means of evidence.2) The effectiveness of making and registering limited liability company legal entity deeds by a notary through the General Legal Administration System in Blora Regency is the registration of limited liability company deeds through the General Legal Administration System by a notary directly which strongly supports a faster and more effective registration completion process. Keywords: Administration; Company; Entity; System.
Physicochemical Properties and Fatty Acid Methyl Ester (FAME) Extract of Maggot Black Soldier Fly (Hermetia illucens) as Animal Feed Risalatul Fathimah; Dika Putra Wijaya; Amirotul Muniroh; Sumari Sumari; Danar Danar; Nilna Inayatan Nafiah; Fatimah Az-Zahra; Aura Gitta Zhafirah; Grestya Dienda Monicha; Marendha Salma Sajidah; Juwita Oktaviani; Fina Kharisma Musallamah; Putri Rizky Febrianti
Biology, Medicine, & Natural Product Chemistry Vol 15, No 1 (2026)
Publisher : Sunan Kalijaga State Islamic University & Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14421/biomedich.2026.151.229-238

Abstract

This study aimed to evaluate the physicochemical properties and fatty acid methyl ester (FAME) profile of Hermetia illucens (BSF) maggot extract as a potential sustainable ingredient for animal feed. Lipid extraction was performed using a modified Bligh and Dyer method by substituting chloroform with n-hexane to ensure safer and environmentally friendly processing. Proximate analysis revealed that BSF maggots contained 29.36% crude protein, 43.76% crude fat, 9.27% ash, 19.94% crude fiber, and a low moisture content of 3.06%, indicating high nutritional density and storage stability. XRF and qualitative tests confirmed significant mineral content, particularly CaO, K?O, and P?O?, with no detectable heavy metals or harmful contaminants, supporting their safety for feed applications. Microscopic analysis showed particle sizes ranging from 2,000-10,000 nm, classifying the material as a nanostructured biomass. The FAME profile demonstrated a diverse composition dominated by 9-octadecenoic acid (10.92%), triacontane (8.87%), octadecanoic acid (7.65%), and heptacosanoic acid (7.17%). Key medium- and long-chain fatty acids such as dodecanoic acid (C12:0), elaidic acid (C18:1), and stearic acid (C18:0) were also detected, indicating the suitability of BSF lipids as an energy-dense feed component with oxidative stability. Overall, the biochemical and structural characteristics obtained in this study highlight BSF maggots as a promising, nutrient-rich, and environmentally sustainable ingredient for animal feed formulations.
Optimization of Palm Bunch Ash-Based Catalysts for the Transesterification of Waste Cooking Oil into Biodiesel Fillah M. Sakhi; Aman Santoso; Sumari Sumari
Jurnal Akademika Kimia Vol. 14 No. 1 (2025)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2025.v14.i1.pp40-50

Abstract

The increasing dependence on fossil fuels to meet fuel needs has caused several problems, such as air pollution, greenhouse effects, unpleasant odors, and loud noises. This research aims to design an alternative fuel in the form of biodiesel by applying a heterogeneous catalyst based on palm bunch to synthesize biodiesel through transesterification. The research stages include activating the active sites of palm bunches through calcination at temperatures of 400 °C, 500 °C, and 600 °C; refining waste cooking oil; esterification; and transesterification. The active components of palm bunch ash (PBA) were characterized using XRF and alkalinity testing. XRF results indicated that PBA contains active basic compounds such as K₂O and CaO, crucial in catalytic activity. Physical-chemical property testing revealed that the synthesis achieved the highest yield of 93.744 %. The results of the physical-chemical characteristic tests produced the best density with an average of 0.888 g mL⁻¹, and the lowest viscosity with an average of 3.79 cSt at 40 °C with an iodine number of 80.116 g I₂ 100 g⁻¹, a saponification number of 170.57 mg KOH g⁻¹, and a refractive index of 1.445. The catalyst demonstrated stable performance up to three reuses with yields ranging from 80–90 %. FTIR spectra showed strong absorption bands at 1172–1165 cm⁻¹, indicating C-O-CH₃ stretching from methyl esters. GC-MS analysis showed that the biodiesel consists of various fatty acid methyl esters (FAME), with the main component being methyl oleate, which appears at a retention time of 37.096 minutes with an area of 40.31 %. So it is shown that PBA catalysts have an excellent potential for commercial applications as they can reduce dependence on fossil fuels by utilizing household waste.
Pengaruh Ekstrak Biji Ketapang (Terminalia catappa L.) Terhadap Daya Hambat Pertumbuhan Bakteri Eschericia coli: Effect of Ketapang (Terminalia catappa L.) Seed Extract Against the Inhibitory Power of Eschericia coli Bacteria Growth Zelen Surya Minata Minata; Annida Elfiana Citra Ardianty; Sumari; Yudhi Utomo
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 2 (2023): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i2.16355

Abstract

Diarrheal is a disease that is widely endemic in tropical countries, especially in Indonesia. The bacterium that causes the appearance of diarrheal diseases is Eschericia coli. Plants that have the potential to be a cure for diarrhea are ketapang (Terminalia catappa L.). Ketapang seeds contain tannins, flavonoids, alkaloids, and saponins that can be used as antibacterial. This study aims to identify the effect of ketapang seed extract on the activity of E. coli bacteria. Extraction of ketapang seeds is carried out by the soxhlet extraction method with a solvent mixture of water and ethanol 96%. This research is a laboratory experiment. Bacterial growth inhibition test is carried out by the phytochemical test of ketapang seed extract with the addition of FeCl3 solution showed positive results containing tannin compound indicated by the formation of a blackish-green colored solution. Positive control was carried out with amoxicillin and negative control with 70% ethanol solution. The results of the ANOVA test analysis obtained a significance value of 0.963, interpreted that there was a difference in inhibition power in variations in the concentration of ketapang seed extract with the most effective extract concentration being 0.8%. The higher the concentration of ketapang seed extract, the greater the inhibition against the growth of E. coli bacteria, therefore it can be used as a basic ingredient for anti-diarrhea drugs.
Co-Authors A. Alif Mardianto Adilah Aliyatulmuna Agus Budianto Agustina, Nur Indah Aldwinarta, Farrel Hafiz Aman Santos Aman Santoso Amanatin, Alfitia Dwi Amirotul Muniroh Andyka Medarda Pradana Annida Elfiana Citra Ardianty Antonia, Vonny Anugrah Ricky Wijaya Aura Gitta Zhafirah Ciptawati, Endang Cylindrica, Vrisca Bella Danar Danar Dedek Sukarianingsih Devi Indrasari Mustopa Putri Dika Putra Wijaya Dinar Rachmadika Baharintasari Dinar Rachmadika Baharintasari Dwi Ratna Wulandari Effendy Effendy Eli Hendrik Sanjaya Endang Budiasih Evi Susanti Fadila Abna Swari Faizah, Siti Farashinta Nadia Fatimah Az-Zahra Fauziah, Putri Nanda Fauziatul Fajaroh Fillah M. Sakhi Fina Kharisma Musallamah FITRIYAH, IDA Ganden Supriyanto Grestya Dienda Monicha Habiddin Hadi Nur Hadi Nur Hadi Nur Handoko Darmokoesomo I Wayan Dasna Ida Bagus Suryadarma Ida Bagus Suryadharma Ima Rosyida Indah Nur Pramesti Irsyadatun Ni’mah Izzah, Dewi Jalinan Jacky Anggara Nenohai Januarti, Wenny Juwita Oktaviani Kelvert Kong Kinanthi, Bilqis Rahma Lailatul Ilmiyah Lailatur Rizqiyah Liqanatul Putri Sholikah Ma'ruf, Umar Mahmudah, Siti Nur Mardhiyyah, Cut Ainul Mardianto, A. Alif Marendha Salma Sajidah Marfu'ah, Sitti Margaret Pandaleke Mauliana Nursafitri Maya Sari Muhammad Roy Asrori Mukhamad Nurhadi, Mukhamad Muntholib Munzil Nareswari, Tsalis Jauza Nazriati Nazriati dkk. Nilna Inayatan Nafiah Ni’mah, Irsyadatun Novi Andriani Novi Andriani, Novi Nur Arief Nugroho Nur Indah Agustina Nurin Fitriana Nursafitri, Mauliana Permatasari, Suryani Indah Prakasa, Yana Fajar Priska Yohanita Sodanango Purbo Suwasono Putri Hapsari, Mamila Putri Qori Utami Putri Rizky Febrianti Rachman, Ihsan Budi Ratna Kusumawardani, Ratna Retnosari, Rini Ridwan Joharmawan Risalatul Fathimah Rizky, M Rohman Fantusi Rohman Fantusi Ryansyah, Hardi Santa, Eldat Wira Santosa Santosa Setiawan, Nur Candra Eka Sholikah, Liqanatul Putri Siew Fan Wong Sin Yuan Lai Sin Yuan Lai Sinta Nur Laila Siti Marfuah, Siti Siti Marfu’ah SRI RAHAYU Suharti Suryani Indah Permatasari Syafiuddin Syafiuddin Teguh Wirawan Vrisca Bella Cylindrica Wahyu S. Pambudi Wahyu Setyo Pambudi Wele, Amonius Regino Wiwin Dwi Nurpitasari Yahmin Yahmin Yana Fajar Prakasa Yana Fajar Prakasa Yudhi Utomo Yulianto, Andik Yulisya Zuriatni Yuneta Dwi Yunisari Zelen Surya Minata Zhiying Zhu Zuniarto, Ahmad Azrul